CODEWITHSUNDEEP
hbasedowntime
Vikash Pareek
Vikash Pareek

Reputation: 1181

How HBase compactions affect clients?

I do know basic of hbase compaction i.e. how it works under the hood on HFiles. But, I am curious to know that what happens to other services during both the compactions (minor & major), will that be downtime for hbase? i.e. at the time of compaction what if a client run a get or put query? Will that query be responded or hangs during the compaction?

Any response will be appreciated.

Thanks,

Vikash

Upvotes: 0

Views: 394

Answers (1)

Harold
Harold

Reputation: 463

You'll find some answers in the Editors' documentation (HDP, CDH) but to summarize :

  • No downtime at all
  • Minor compactions have (nearly) no impact on clients
  • Major compactions impact the performances and slow down the GET/PUT so recommandation is to schedule them during off-peak hours.

Upvotes: 0

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